Machine for spinning, doubling, twisting, and the like yarns, fibers, and the like



E. ANDREW Er A1. 1,750,153 INNING, DOUBLING, TWISTING, AND THE LIKE, YARNS, FIBERS, AND THE LIKE Filed Nov. 18, 1927 March l1, 1930. 1', MACHINE FOR SP mwN.

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www... nu# 1. l Vn. -LVI L UM 3% WM @at l n l lti ' fast point and the rotary Patented Mar. 11, 1930 UNITED STATES PATENT oFFicE THOMAS EDWINVANDREW AND MELON LANGSTRETH, 0F ROCHDALE, ENGLAND, AB- SIGNORS TO DUNLOP COTTON MILLS LINITED, OF LONDON, ENGLAND, A CORPORA- TION OF GREAT BRITAIN u MACHINE FOB SPINNING, DOUBLING', TWISTING, AND THE LIKE THE LIKE v YARNS, FIBERS, AND

Application med November 18, 1927, Serial No. 234,232, and in Great Britain November 22, 1928.

This invention relates to spinning, twisting, doubling and the like machines of the kind, hereinafter called double twist machines adapted to imparttwo twists to the roving, yarn, thread or the like, hereinafter called the yarn, at every single revolution of the spindle.

In this class of machines the yarn in transit during treatment is formed into a loop held relatively fast at points adjacent the windoff spool and the take-up spool respectively and the loop is rotated at its closed end so that one leg of the said loop rotates about the other. Thus two twists are imparted to the yarn, one between each respective relatively point.

Hereinafter the terms bobbin and reel7 occur frequently and in order that the signiicance thereof may be appreciated the use of the said terms is explained in the following paragraph.

Tn ring and travellerand also in flier ma,- cbines, the twisted yarn is invariably wound onto the spool associated with those devices. Now in this respect there are two main classes of double twist machine. the same being (a) those wherein the twisted yarn is wound onto the spool associated with the twisting devicesthe 1 same sequence as in ring and traveller machines and (b) those wherein the said sequence is reversed-the twisting devices being associated with the spool of untwisted yarn: This invention has particular reference to the latter class and hereinafter the term bobbin is used in connection with the spool carrying the untwisted yarn and the term reel with Spool whereon the twisted yarn is wound.

This invention relates mainly, but not ywholly as hereinafter indicated, to improvements in the type of this class (6') of double twist machines wherein the yarn is led from the bobbin, through the centres respectively of the spool thereof and the spindle upon which it is stationarily mounted, out at the side of the said spindle and thence to the reel. Of the points referred to in the second paragraph hereof the rotary point occurs Where the yarn leaves the spindle while the two relatively fast points occur, one between the said rotary point and the bobbin, and the other between the said rotary point and the reel.

Many designs for such machines have hitherto been devised but all such machines with- 1n our knowledge have invariably utilized, mam-ly for the purpose of guiding the yarn from the bobbin to the relatively fast point there-adjacent, some device, extraneous to the said bobbin such as a structure disposed substantially parallel to the axis of the said bobbin; and various tensioning devices have been associated therewith.

Proposed schemes such as these have been known to the trade foi` :many years but their complete lack of success in practical application has prob ably been due to the cumbersome and complicated nature of their construction.`

lit is an object of this invention to simplify the construction adjacent the bobbin and to increase the eiiciency thereof by providing new and improved means whereby the yarn may be guided to the iirst relatively fast point,which means are adapted to obviate the necessity for such a structure as that referred to.

According to our invention, therefore, we provide a new and improved guiding and tensioning device which is preferably adapted to be housed rigidly within the bore of the spool of the bobbin.

It will be apparent that such a device is admirably suited to eliminate completely the old cumbersome structure-by obviatin its necessity as a device essentially for gui ing and tensioning--but the said invention is ap plicable in a lesser degree as an improvement on and in association with machines as hitherto composed, the said structure then being adapted to function as a support for the said device and, as hitherto, as means to weight the bobbin against rotation.l

It will be apparent that when our invention is applied in its preferred form it is necessary to provide means independent thereof whereby the rotation of the bobbin is prevented; and suitable means are the subject of our co-pending application, Serial No. 234,233, filed Nov. 18, 1927. p

Such means have usually been associated as herein before indicated with the guiding of in zig-zags rather than in convolutionsthe aforesaid facility for varying the tension being, it should lbe noted, maintained--said tension being dictated of course by the number of zig-zags occasioned. Such zig-zags may be obtained, for example, by causing the yarn to pass through offset 'spaces or equivalent means on the tubular member through which the yarn passes.

Such a zig-zag arrangement may be combined with a spring control of the tension as illustrated in Fig. 3 of the accompanying drawing. l l

As there exemplified the shank 5 has a slatlilre extension 19 upon which is slidably mounted a similar slat 20 anchored to the shank 5 by a spring 21 adapted to accommodate or neutralize diference in the tension in the yarn, said tension being occasioned by the zig-zagging of the yarn between the two said slats as shown in the drawings.

Or again, regarding the mounting means, it will be apparent for instance that, as ex.- emplified in Fig. 4, thev arrangement shown in Fig. 2 may be reversed-the outer races of the bearing 11 then being fast with the spindle 13 and the inner`races carrying thesupport for the bobbin spool. Or again, the said spool may have an extension adapted to fit into the'bore of the inner races of the bear-V ings. And further, said inner races may be joined by a tubular sleeve.

. It will however be apparent in general that the mounting may be arranged in any convenient manner, such for instance as is indicated in our aforesaid co-pending application, Se-

rial No. 234.233, filed November 18, 1927. Or again forg instance arrangements similar to those therein described or claimed maybe utilized less the ball or similar bearings wherein theseisaid arrangements arecharacterized; itbeing apparent t at we do not confine ourselves to the utilization of such antiuse is most desirable.

Again, as exemplified by the disposition of the weight 14 in Fxig. 4, it will be apparentA that provision may be made to balance or partly to balance the overhanging weight of C the bobbin and its association parts. ,f

Again while the description is conned to a horizontal or slightly inclined disposition .fit 4will be readily understood that the spindle may be disposed substantially verticallyonly slightly inclined to allow the weighing to function-the mounting of course being suitably ymodified to meet the new condition.

Again it will be a parent that we do not limit ourselves to on y one package of yarn as for instance we may use two or more whereof the respective yarns preferably would be themselves twisted and cabled lor twisted together. .f

In conclusion while 4we have confined the 051" description to machines wherein the yarn is their led through the center of-thespindle, a bobbin mounted and provided with a guiding and tensioning device according to this invention may also be utilized in the other of the two main typesof machines hereinbearm of theframe, through the side" of the other bearing point, into the bore thereof and v thence to the take-up reel. Of the points re-K ferred to in the second paragraph hereof, the rotary point occurs at the bearingv points while the relatively fast points oecur,`one between the bobbin and the first bearing point and the other between the reel and the last bearing point.

Having .now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is 1. An apparatus of the type described which comprises a rotating drive spindle and a non-rotating bobbin. removably mounted on the free end of said spindle, said spindle and bobbin having acentral yarnl passage therethrough and a tubular member removably mounted on the free end of said bobbin and said tubular member 'having openings through which said yarn may be threaded to create. tension as it is drawn therethrough.

2. An apparatus of the type described which comprises a rotating drive spindle and a nonrotating bobbinvremovably mounted on the free end of said spindle, said spindle 

